QgsOverlayObjectPositionManager Class Reference
Interface for classes that arrange overlay objects of different layers on the map. More...
#include <qgsoverlayobjectpositionmanager.h>
Public Member Functions | |
| virtual | ~QgsOverlayObjectPositionManager () |
| virtual void | addLayer (QgsVectorLayer *vl, QList< QgsVectorOverlay * > &overlays)=0 |
| Adds a layer that may contain * overlays to the position manager. | |
| virtual void | removeLayers ()=0 |
| Removes all the layers. | |
| virtual void | findObjectPositions (const QgsRenderContext &context, QGis::UnitType unitType)=0 |
| Calculate positions for the overlay objects. | |
Detailed Description
Interface for classes that arrange overlay objects of different layers on the map.
- Note:
- This class has been added in version 1.1
Definition at line 31 of file qgsoverlayobjectpositionmanager.h.
Constructor & Destructor Documentation
| virtual QgsOverlayObjectPositionManager::~QgsOverlayObjectPositionManager | ( | ) | [inline, virtual] |
Definition at line 35 of file qgsoverlayobjectpositionmanager.h.
Member Function Documentation
| virtual void QgsOverlayObjectPositionManager::addLayer | ( | QgsVectorLayer * | vl, | |
| QList< QgsVectorOverlay * > & | overlays | |||
| ) | [pure virtual] |
Adds a layer that may contain * overlays to the position manager.
The overlay objects contained in the overlays will then be considered in label placement
Implemented in QgsCentralPointPositionManager, and QgsPALObjectPositionManager.
Referenced by QgsMapRenderer::render().
| virtual void QgsOverlayObjectPositionManager::removeLayers | ( | ) | [pure virtual] |
Removes all the layers.
Implemented in QgsCentralPointPositionManager, and QgsPALObjectPositionManager.
Referenced by QgsMapRenderer::render().
| virtual void QgsOverlayObjectPositionManager::findObjectPositions | ( | const QgsRenderContext & | context, | |
| QGis::UnitType | unitType | |||
| ) | [pure virtual] |
Calculate positions for the overlay objects.
- Parameters:
-
context Context of rendering operation (Painter, scale factor) unitType meters, feet, degrees
Implemented in QgsCentralPointPositionManager, and QgsPALObjectPositionManager.
Referenced by QgsMapRenderer::render().
The documentation for this class was generated from the following file:
- src/core/qgsoverlayobjectpositionmanager.h
